55 



Order IV. SCOLOCES. 



Annelides abranches SETiGi:RES, Cuv. Reg. Anim. iii. 209. 



Annelides LUMBRICIN.E, Savig, Syst. Annel. 99. 



LoMBRiciNES, Blainv. Princip. d'Anat. Comp. i. tab. 7 (1822). 



LoMBRiciNi, Latr. Fam. Nat. 246. 



LuMBRiciNA, Macleay in MurcUsori's Silurian System, ii. 699 

 (1839) ; and in Ann. Nat. Hist. iv. 385. 



Annelides terricoles, Audouin 8f Milne-Edwards, Lift, de la 

 France, ii. 50; and in Lam. An. s. Vert. 2de edit. v. 513. 



Abranchia setigera, Fleming in Encyclop. Brit. 7th edit. xi. 222. 



Annelida terricola, Jones, Anim. Kingd. 189. 201. 



Annelides terricoles ou Abranches setigeres, Milne- 

 Edwards, Elem. Zool. 2de edit. ii. 225. 



Scoleides, M.-Edwards sec. E. Blanchard in Ann. des Sc. nat. viii. 

 134 (1847). 



Oligochaeta, Grube, Fam. Annelid. 27. 



Char. Body vermiform, distinctly segmented, the segments with- 

 out any soft appendage, but furnished with spines or spinets or seta- 

 ceous bristles partially retractile : head either undefined or marked 

 by its form, without any appendages : mouth inferior, emaxillary : 

 no external organs of respiration : blood red, yellow, or rarely colour- 

 less : anus terminal : sexual pores in pairs, placed forwards on the 

 venter on each side of the mesial line. Terricolous, dwelling in 

 moist earth or in mud saturated with water, which they swallow and 

 from which they extract their food. Hermaphroditical. Oviparous 

 or multiplying by spontaneous division. Capable of reproducing 

 amputated portions. No metamorphosis. A few excrete a phos- 

 phorescent fluid ; and the skin of a few is iridescent. The bristles 

 are always simple, and solitary or fasciculate. 



The following is a synopsis of the British genera : — 



Tribe I. Lumbricina. 



Head indistinct : all the segments, excepting the first, armed with 

 setae. 



Family I. LUMBRICIDJE. Terrestrial or burrowing in the mud 



covered with fresh water. 

 1. Lumbricus. Setse single, 8 to each segment, quadriserial. 



